Checking the ground lead

WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.

Connect an ohmmeter between connector terminal #1 for the air conditioning (A/C) pressure sensor and the ground terminal.

Fig 1: Identifying Knock Sensor (KS) Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

The ohmmeter should read approximately 0 Ω.

OK
Refer to Defective air conditioning (A/C) pressure sensor
NOT OK
Refer to Checking the power cable